The summaries of the Colorado Court of Appeals published opinions constitute no part of the opinion of the division but have been prepared by the division for the convenience of the reader. The summaries may not be cited or relied upon as they are not the official language of the division. Any discrepancy between the language in the summary and in the opinion should be resolved in favor of the language in the opinion.
SUMMARY November 22, 2023
2023COA110
No. 21CA1230, People v. Mion — Criminal Law — Affirmative Defenses — Involuntary Intoxication
In this direct appeal in a criminal case, the defendant
contends that the trial court erred by not instructing the jury on his
affirmative defense of involuntary intoxication. The defense was
based on the defendant’s claim that, before he committed the
crimes at issue, he smoked a joint that he thought contained only
marijuana, but which actually contained a stimulant that deprived
him of the capacity to conform his conduct to the requirements of
the law.
In an issue of first impression in Colorado, a division of the
Colorado Court of Appeals holds that the affirmative defense of
involuntary intoxication is legally cognizable when (1) a defendant
knowingly ingests what he believes to be a particular intoxicant; (2) in so doing, he unknowingly ingests a different intoxicant; and
(3) it is the different intoxicant that deprives him of the capacity to
conform his conduct to the requirements of the law. Because that
was the essence of the defendant’s involuntary intoxication claim,
his defense was legally cognizable. The division also holds that the
defendant presented sufficient evidence — a low threshold — at trial
to entitle him to a jury instruction on involuntary intoxication.
Because the trial court refused the defendant’s requested
involuntary intoxication instruction, and because the division can’t
conclude that the error was harmless beyond a reasonable doubt, it
reverses the judgment and remands the case for a new trial. COLORADO COURT OF APPEALS 2023COA110
Court of Appeals No. 21CA1230 City and County of Denver District Court No. 19CR6240 Honorable Eric M. Johnson, Judge
The People of the State of Colorado,
Plaintiff-Appellee,
v.
Isaac U. Mion,
Defendant-Appellant.
JUDGMENT REVERSED AND CASE REMANDED WITH DIRECTIONS
Division VI Opinion by JUDGE WELLING Lipinsky and Gomez, JJ., concur
Announced November 22, 2023
Philip J. Weiser, Attorney General, Jaycey DeHoyos, Assistant Attorney General, Denver, Colorado, for Plaintiff-Appellee
Joseph Chase, Alternate Defense Counsel, Denver, Colorado, for Defendant- Appellant ¶1 In this direct appeal in a criminal case, defendant, Isaac U.
Mion, contends that the trial court erred by not instructing the jury
on his affirmative defense of involuntary intoxication. The defense
was based on Mion’s claim that, before he committed the crimes at
issue, he smoked a joint that he thought contained only marijuana,
but which actually contained a stimulant that deprived him of the
capacity to conform his conduct to the requirements of the law.
¶2 Addressing an issue of first impression in Colorado, we hold
that the affirmative defense of involuntary intoxication is legally
cognizable when (1) a defendant knowingly ingests what he believes
to be a particular intoxicant; (2) in so doing, he unknowingly ingests
a different intoxicant; and (3) it is the different intoxicant that
deprives him of the capacity to conform his conduct to the
requirements of the law. Because that was the essence of Mion’s
involuntary intoxication claim, his defense was legally cognizable.
We also hold that Mion presented sufficient evidence — a low
threshold — at trial to entitle him to a jury instruction on
involuntary intoxication. Because the trial court refused Mion’s
requested involuntary intoxication instruction, and because we
1 can’t conclude that the error was harmless beyond a reasonable
doubt, we reverse the judgment and remand for a new trial.
I. Background
A. The Criminal Charges and Events Underlying Them
¶3 The prosecution charged Mion with aggravated robbery,
criminal mischief, and felony menacing based on events that
occurred on a summer night in 2019.
¶4 At around 11 p.m. that night, a security guard found Mion
sleeping on the grounds of the Denver City and County Building.
The guard told Mion that the grounds were closed to the public and
that he couldn’t sleep there. The guard returned several minutes
later, found Mion still sleeping there, and told Mion he was going to
call 911 if Mion wouldn’t leave. Mion then stood up and, while
allegedly holding a screwdriver, grabbed the guard’s phone out of
his hand (the basis for the aggravated robbery charge). At trial, the
security guard described Mion’s behavior during the encounter as
“agitated” and “erratic.”
¶5 A second security guard approached and called 911. Mion
knocked her phone out of her hand, causing the screen to crack
(the basis for the criminal mischief charge).
2 ¶6 Mion eventually left the grounds of the City and County
Building but later began yelling at a third victim. When that victim
got in his truck, Mion verbally threatened him and hit the truck
with a club-like object (the basis for the felony menacing charge).
At trial, that victim described Mion’s “rage” and “erratic” behavior
during the incident.
¶7 Police officers arrested Mion after he tried to evade them by,
among other things, submerging himself in a creek. During the
arrest, Mion yelled at the officers to shoot him and that he wanted
to die. At trial, one of the officers testified that he was most
concerned about Mion’s “really loud, erratic behavior” that evening.
B. Mion’s Tendered Affirmative Defense of Involuntary Intoxication
¶8 Before trial, Mion endorsed the affirmative defense of
involuntary intoxication.
¶9 Mion testified in his own defense at trial. According to Mion’s
testimony, on the evening in question, he was on his way to deliver
a bicycle to someone when he stopped to visit a friend who normally
stayed in a little doorway in downtown Denver. Mion commonly
visited that friend when he was downtown.
3 ¶ 10 While visiting the friend, Mion drank a “little bit” of malt beer
but didn’t feel drunk.
¶ 11 Mion’s friend also began smoking what looked to Mion like a
joint containing marijuana. Mion assumed it was marijuana with a
low THC level, known as “dirt weed,” explaining that he “grew up in
the ’80s” and “if you got weed you got it from Civic Center” and “it
was not strong weed ever.” Mion had smoked marijuana at least a
couple hundred times, and more recently about ten times per year.
The joint Mion’s friend was smoking was very small, which seemed
odd to Mion because of the prevalence of marijuana in Denver.
¶ 12 The friend offered the joint to Mion. Although Mion was “not a
fan” of marijuana because it tended to demotivate him, Mion
accepted the joint “out of courtesy” because “it’s kind of
disrespectful if someone who doesn’t have a lot offers you
something and you don’t accept.” Mion didn’t ask his friend what
was in the joint because he wanted to “portray . . . trust . . .
breaking bread with this person out of respect.”
¶ 13 Mion took “two hits” from the joint. To Mion, the joint smelled
like marijuana and didn’t have a strange taste.
4 ¶ 14 Approximately twenty minutes later, Mion began having
“tunnel vision emotionally” and feeling a scary sense of foreboding.
He remembered going to the City and County Building, and the last
thing he remembered thinking was, “This is all bad.” He had no
memory of falling asleep at the City and County Building or of any
of the events underlying the charges in this case.
¶ 15 Video surveillance presented at trial showed Mion’s behavior
that evening, which Mion described as being in a “ca[ta]tonic state.”
When Mion was asked at trial whether marijuana had ever caused
that kind of effect on him, he responded, “No. Nothing like that.”
He further explained that marijuana had never made him
“blackout” or “go nuts.” He also testified that methamphetamine
and cocaine, which he had also used in the past, had never made
him “blackout” or “go nuts.” Mion testified that if he had thought
drinking the beer and smoking two hits from the joint would affect
his plans to deliver the bicycle that evening, he wouldn’t have done
so.
¶ 16 One of the arresting police officers, who had experience
dealing with people under the influence of drugs, opined during his
direct examination at trial that Mion “appeared to be under the
5 influence of a stimulant” that evening. When asked to explain
further, the officer testified that stimulant use can cause a person
to become “agitated” and “highly animated,” and to “not speak[] in a
sensical way.”
¶ 17 On cross-examination, Mion’s counsel asked the officer
whether the joint Mion smoked could have contained a stimulant:
Q. Marijuana can be smoked in a cigarette, a joint?
A. Yes, sir.
Q. And . . . while it appears to be marijuana, it can be mixed with other substances, correct?
A. It’s possible.
Q. Including stimulants?
¶ 18 Then, Mion’s counsel focused on synthetic marijuana, or
“spice,” a type of stimulant:
Q. Are you familiar with spice?
Q. What is that?
A. Synthetic marijuana.
Q. . . . [C]an that also be smoked in a joint?
6 Q. . . . [D]o you know if . . . while they’re smoking it they would know whether they’re smoking marijuana or spice?
A. I don’t believe so, but I can’t say for sure.
Q. Okay. And have you seen the effects that spice can have on individuals?
Q. Can it act differently than marijuana does?
Q. And cause a stimulant kind of effect?
C. The Jury Instruction Conference and Ruling at Issue
¶ 19 During the jury instruction conference, Mion’s counsel argued
that Mion was entitled to assert the affirmative defense of
involuntary intoxication based on his description of his past drug
use, his experiences regarding the effects of those drugs, and the
very different effects he experienced smoking the joint with his
friend on the summer night in 2019. Counsel highlighted the
evidence that “there can be things laced with marijuana” and
argued that the jury should be allowed to determine “if there was
something unknown in what [Mion] smoked that caused a
blackout.” Counsel likened Mion’s situation to one where an
7 unknown substance is placed in a bar patron’s alcoholic drink
without the patron’s knowledge.
¶ 20 In response, the prosecutor, noting the lack of published
Colorado case on point, argued that a defendant who ingests an
intoxicating substance that causes an unexpected effect must
present additional evidence of his “due diligence” to assert the
affirmative defense of involuntary intoxication. In doing so, the
prosecutor emphasized that Mion didn’t ask his friend what was in
the joint.
¶ 21 The court denied Mion’s request for a jury instruction on
involuntary intoxication, explaining that
[Mion] admitted to using marijuana. In other words, he admitted to using an intoxicant, and that use was voluntary. The question is whether or not there was [an]other type of drug . . . that he was unaware of [that made his intoxication involuntary].
There’s absolutely no credible evidence that there was an intoxicant that . . . raised the issue of involuntary intoxication. The only thing in the evidence is that [Mion] used marijuana [and] he felt different . . . .
[Mion] also testified that . . . modern-day marijuana . . . has different strengths now. And . . . he doesn’t use it as much as he did before . . . . [Arguing that] there must have
8 been something else in the marijuana . . . is pure speculation . . . .
[Mion] was aware. He was taking an intoxicant. There was a result. There is no evidence that it was anything other than marijuana other than he felt differently.
D. The Result of the Trial
¶ 22 The jury found Mion guilty of robbery, criminal mischief, and
misdemeanor menacing (while rejecting the People’s contention that
he used or threatened the use of a deadly weapon). The trial court
sentenced Mion to forty months in community corrections.
II. Standard of Review
¶ 23 This appeal requires us to interpret the Colorado statute
governing the affirmative defense of involuntary intoxication,
section 18-1-804, C.R.S. 2023. We review questions of statutory
interpretation de novo. Orellana-Leon v. People, 2023 CO 34, ¶ 9.
We also review de novo whether a defendant presented sufficient
evidence entitling him to present an affirmative defense to the jury.
Pearson v. People, 2022 CO 4, ¶ 16.
9 III. Analysis
A. The General Law in Colorado Governing the Affirmative Defense of Involuntary Intoxication
¶ 24 The statutory affirmative defense of involuntary intoxication
provides that “[a] person is not criminally responsible for his
conduct if, by reason of intoxication that is not self-induced at the
time he acts, he lacks capacity to conform his conduct to the
requirements of the law.” § 18-1-804(3). “Intoxication” means “a
disturbance of mental or physical capacities resulting from the
introduction of any substance into the body.” § 18-1-804(4).
“Self-induced intoxication” means
intoxication caused by substances which the defendant knows or ought to know have the tendency to cause intoxication and which he knowingly introduced or allowed to be introduced into his body, unless they were introduced pursuant to medical advice or under circumstances that would afford a defense to a charge of crime.
§ 18-1-804(5).
¶ 25 Based on our supreme court’s interpretation of section
18-1-804, a defendant claiming involuntary intoxication must
introduce some credible evidence that
10 (1) a substance was introduced into his or her body; (2) the substance was not known to be an intoxicant or was taken pursuant to medical advice, or the defendant did not know the substance could act as an intoxicant; (3) the substance caused a disturbance of mental or physical capacities; and (4) the introduction of the substance resulted in the defendant’s lack of capacity to conform his or her conduct to the requirements of law.
People v. Voth, 2013 CO 61, ¶ 19 (citing People v. Garcia, 113 P.3d
775, 783 (Colo. 2005)). We will refer to this as the Voth test.
B. There Are No Published Colorado Cases with Similar Facts
¶ 26 Before analyzing the language in section 18-1-804 as it applies
to Mion’s proffered defense, we note that there are no published
Colorado cases with similar facts to those presented in this case —
namely, where a defendant ingests something he knows to be an
intoxicant but asserts that a different intoxicant that he didn’t know
was present caused his inability to conform his conduct to the law.
Both parties compare and contrast this case to People v. Low, 732
P.2d 622 (Colo. 1987), and Mion also relies on People v. Turner, 680
P.2d 1290 (Colo. App. 1983). But neither of those cases is
particularly instructive here.
11 ¶ 27 In Low, the defendant consumed a large quantity of
over-the-counter cough drops during a lengthy car trip in his
continuing efforts to quit using tobacco. 732 P.2d at 625. The
cough drops contained dextromethorphan hydrobromide, which, in
such excessive quantities, caused the defendant’s psychotic and
delusional behavior, leading him to commit the charged offenses.
Id. at 625-26, 628. The supreme court indicated that the defendant
had a potentially viable claim of involuntary intoxication because
neither the packaging on the cough drops nor the defendant’s prior
use of them put him on notice that using them in excessive
quantities could cause intoxication. See id. In other words, the
defendant wasn’t aware that the substance he was knowingly
ingesting would intoxicate him.
¶ 28 Similarly, Turner involved the defendant’s use of migraine
medication in quantities that exceeded the prescribed dosage. 680
P.2d at 1291-92. When the defendant had previously used the
medication in excess of the prescribed dosage, it had simply made
him drowsy. Id. But on the day in question, it caused him to lack
any memory of where he was or what he was doing at the time he
committed his crimes. Id. A division of this court concluded that
12 the defendant was entitled to raise the affirmative defense of
involuntary intoxication based on his testimony that he hadn’t been
warned of the consequences of exceeding the prescribed dosage,
and his past experiences exceeding the prescribed dosage had
caused only drowsiness. Id. at 1293.
¶ 29 In both of those cases, the defendants knew what substances
they were ingesting but didn’t know or have reason to know that the
substances could cause intoxication. That scenario clearly falls
within the involuntary intoxication statute and satisfies the Voth
test. See § 18-1-804(5) (involuntary intoxication doesn’t apply
where the intoxication was caused by substances that “the
defendant knows or ought to know have the tendency to cause
intoxication”); Voth, ¶ 19 (involuntary intoxication includes, among
other scenarios, the situation where a defendant knowingly ingested
a substance but “did not know the substance could act as an
intoxicant”).
¶ 30 That’s not the situation here. Mion claimed that the joint he
smoked must have contained a stimulant, but that he didn’t know
or have reason to know that it contained a stimulant. The People,
on the other hand, argue that there’s insufficient evidence that
13 Mion ingested anything other than beer and marijuana, and it was
the marijuana’s potency that caused the full degree of his
intoxication. At first glance, that appears to be a disputed issue of
fact for a jury to resolve (and in Part III.D below, we address
whether Mion presented sufficient evidence entitling him to have
the jury resolve that disputed issue of fact). See City of Fountain v.
Gast, 904 P.2d 478, 482 (Colo. 1995) (“It is the sole province of the
jury to resolve disputed issues of fact and to determine credibility of
witnesses, weight to be accorded testimony, and inferences to be
drawn from evidence.”).
¶ 31 The central factual dispute here is what substance caused the
intoxication that allegedly deprived Mion of the capacity to conform
his conduct to the requirements of the law. That’s different than
Low and Turner, where the substances at issue were undisputed.
¶ 32 Low and Turner certainly don’t comprehensively cover every
permutation of potentially cognizable involuntary intoxication
claims. In terms of case law from other jurisdictions, the Minnesota
Supreme Court, for example, has recognized four different kinds of
involuntary intoxication: unexpected intoxication resulting from the
ingestion of a medically prescribed drug, pathological intoxication,
14 coerced intoxication, and intoxication by innocent mistake. City of
Minneapolis v. Altimus, 238 N.W.2d 851, 856 (Minn. 1976).
¶ 33 Could Mion’s claim properly fall within the category of
involuntary intoxication by innocent mistake? See Hendershott v.
People, 653 P.2d 385, 396 n.10 (Colo. 1982) (“Involuntary
intoxication . . . is without moral culpability and, for this reason, is a
complete defense to all crimes.”) (emphasis added). Along these
lines, Mion argues that his claim is akin to that of a bar patron who
(1) knowingly drinks alcohol (which, like marijuana, is an
intoxicant); but (2) in so doing, unknowingly ingests a different drug
that causes more intense and severe intoxication (such as a “date
rape” drug). See People v. Miller, 113 P.3d 743, 746-47, 746 n.6
(Colo. 2005) (explaining that the trial court had instructed the jury
on involuntary intoxication in response to the defendant’s claim
that the victim slipped a “date rape” drug into the defendant’s
alcoholic drink).1
1 Although People v. Miller, 113 P.3d 743 (Colo. 2005), involved a
defendant who claimed that he was “slipped a mickey,” the opinion doesn’t help resolve the issue presented here because, in that case, there was “no dispute concerning the instructions addressing the involuntary intoxication.” Id. at 750. Instead, the instructional
15 ¶ 34 Given the lack of Colorado case law on point, we turn to the
language of the involuntary intoxication statute to determine
whether Mion’s claim — which essentially alleges involuntary
intoxication by innocent mistake — is legally cognizable under
Colorado’s involuntary intoxication statute.
C. Mion’s Proffered Defense Is Legally Cognizable Under the Involuntary Intoxication Statute
¶ 35 Under section 18-1-804(3), “[a] person is not criminally
responsible for his conduct if, by reason of intoxication that is not
self-induced at the time he acts, he lacks capacity to conform his
conduct to the requirements of the law.” (Emphasis added.) In
other words, the defendant’s inability to control his conduct must
be caused by intoxication that isn’t self-induced. Thus, involuntary
intoxication is defined in terms of what it isn’t — “self-induced” —
not what it is.
¶ 36 “Self-induced intoxication” is intoxication caused by
substances (1) “which the defendant knows or ought to know have
the tendency to cause intoxication” and (2) “which he knowingly
issue related to the voluntary intoxication instruction the court gave. Id. at 745 n.2, 750-51.
16 introduced or allowed to be introduced into his body” (unless they
were introduced pursuant to medical advice or “under
circumstances that would afford a defense to a charge of crime”).
¶ 37 The statute doesn’t squarely address the scenario advanced by
Mion involving the ingestion of multiple intoxicants, some of which
are ingested knowingly and some of which are ingested
unknowingly. But based on our interpretation of the statute, we
conclude that courts must focus on the particular intoxicant that
allegedly deprived the defendant of the capacity to conform his
conduct to the requirements of the law. To rule otherwise would
mean that anytime a person knowingly ingests an intoxicant — no
matter how mild — the person will be criminally responsible for any
resulting behavior, even if what was ingested contained,
unbeknownst to the defendant, a different intoxicant — no matter
how potent and mind-altering.
¶ 38 Under section 18-1-804(5), intoxication that deprives a person
of the capacity to conform his conduct to the requirements of the
law is “self-induced” only where that debilitating intoxication is
caused by substances that the defendant “knowingly introduced or
17 allowed to be introduced into his body.” And using Mion’s example,
if a bar patron becomes incapacitated because someone slipped a
“date rape” drug into the patron’s alcoholic drink, the patron didn’t
“knowingly” ingest the “date rape” drug.
¶ 39 Further, under that scenario, we conclude that the bar patron
also didn’t “knowingly . . . allow[] [the “date rape” drug] to be
introduced into his body.” § 18-1-804(5) (emphasis added).
Instead, we conclude that the “allowed to be introduced” language
in section 18-1-804(5) refers to the situation where someone else
introduces an intoxicant into the defendant’s body with the
defendant’s knowledge — for example, where a defendant
voluntarily allows someone else to inject him with a hypodermic
needle containing what he knows to be an intoxicant.
¶ 40 Having said that, we also conclude that the Voth test doesn’t
capture all the scenarios that could constitute involuntary
intoxication under section 18-1-804. As a reminder, the second
prong of the Voth test requires the defendant to show that (a) the
ingested substance “was not known to be an intoxicant”; (b) the
ingested substance “was taken pursuant to medical advice”; or
(c) “the defendant did not know the substance could act as an
18 intoxicant.” Voth, ¶ 19. That test simply does not account for the
scenario where a person unknowingly ingests a substance that is
widely known to be an intoxicant. But that scenario does fall
squarely within the language of the involuntary intoxication statute.
See § 18-1-804(3), (5) (Intoxication that deprives a person of the
“capacity to conform his conduct to the requirements of the law” is
self-induced only where that debilitating intoxication is caused by
substances that the defendant “knowingly introduced or allowed to
be introduced into his body.”).
¶ 41 It can certainly be argued, perhaps persuasively, that Mion’s
conduct here was more reckless than that of a bar patron who
assumes that their alcoholic drink is unadulterated. Indeed, the
joint Mion smoked wasn’t sold to him directly from a regulated
marijuana dispensary, and Mion didn’t ask his friend what was in
the joint. We conclude, however, that those facts don’t transform
this case into one where we can conclude as a matter of law that
Mion can’t claim involuntary intoxication. Indeed, nothing in the
involuntary intoxication statute refers to the concept of
recklessness or, as the People characterize it, assuming the risk.
19 ¶ 42 Because we conclude that the type of involuntary intoxication
claim that Mion raised is legally cognizable under the involuntary
intoxication statute, we proceed to evaluate whether Mion presented
sufficient evidence entitling him to a jury instruction on involuntary
intoxication.
D. Mion Presented Sufficient Evidence to Warrant an Involuntary Intoxication Instruction
¶ 43 A defendant is entitled to a jury instruction on an affirmative
defense if he presents “some credible evidence” supporting the
defense. § 18-1-407(1), C.R.S. 2023. Colorado appellate courts
have understood the phrase “some credible evidence” to be
interchangeable with “some evidence,” “any credible [even if highly
improbable] evidence,” “a scintilla of evidence,” a “small quantum of
evidence,” and “any evidence.” Galvan v. People, 2020 CO 82, ¶ 24.
As those phrases indicate, the evidentiary threshold to be entitled to
have a jury instructed on an affirmative defense is low. People v.
Opana, 2017 CO 56, ¶ 17.
¶ 44 The only way Mion could have conclusively demonstrated that
the joint he smoked contained a stimulant far different than beer or
marijuana would have been for Mion’s counsel to track down the
20 joint that Mion smoked (assuming any of it still existed) and have
chemical tests performed on it. That, of course, didn’t happen.
¶ 45 However, we conclude that the following circumstantial
evidence, taken together, was sufficient to cross the low threshold
entitling Mion to a jury instruction on involuntary intoxication:
Mion testified that he assumed the joint contained
marijuana, it smelled like marijuana, and it didn’t have a
strange taste.
A police officer testified that he didn’t think someone
smoking a joint would be able to tell the difference
between marijuana and spice.
The officer testified that spice can have a different effect
than marijuana — that of a stimulant.
Stimulant use typically causes a person to become
“agitated” and “highly animated,” and to “not speak[] in a
Mion was behaving in an “agitated” and “erratic” manner
on the evening in question.
The officer opined that Mion was under the influence of a
stimulant on that evening.
21 Mion had smoked marijuana on hundreds of occasions,
including around ten times per year in recent years.
Mion testified that marijuana had never caused him to
act in the way he acted on the evening in question —
behavior evidenced by surveillance footage of his offenses
and his arrest.
¶ 46 The People suggest that Mion wasn’t entitled to assert
involuntary intoxication based solely on his “self-proclaimed
unexpected symptoms of intoxication.” But the law is clear that a
defendant is entitled to assert an affirmative defense “even if the
only supporting evidence is ‘highly improbable’ testimony from the
defendant.” Pearson, ¶ 23 (quoting People v. DeGreat, 2018 CO 83,
¶ 22).
¶ 47 The People also cite a Tenth Circuit case for the proposition
that “it is common knowledge that unlawful street drugs do not
come with warranties of purity or quality associated with lawfully
acquired drugs such as alcohol.” United States v. Bindley, 157 F.3d
1235, 1242 (10th Cir. 1998) (quoting People v. Velez, 221 Cal. Rptr.
631, 637 (Ct. App. 1985)). The Tenth Circuit in Bindley further
quoted Velez for the propositions that “unlawful street drugs are
22 frequently not the substance they purport to be or are
contaminated with other substances not apparent to the naked eye”
and “marijuana is frequently contaminated with PCP or other
psychoactive drugs.” Id. (quoting Velez, 221 Cal. Rptr. at 637-38).
¶ 48 Notably, though, the holdings in Bindley and Velez rested in
large part on the fact that marijuana possession and consumption
was illegal in those jurisdictions at that time. But the use of
marijuana is, of course, legal under Colorado law and was at the
time of Mion’s offenses, so marijuana use doesn’t have the same
moral culpability as it once did. See Hendershott, 653 P.2d at 396
n.10 (stating that involuntary intoxication “is without moral
culpability” and is therefore a complete defense to all crimes); cf.
Wells-Yates v. People, 2019 CO 90M, ¶ 58 (“The General Assembly
treats most drug felonies as substantially less grave or serious
today than it has in the past, and this adjustment is the best
evidence of the views held by our maturing society, as expressed
through its representatives in the legislature.”). We offer no opinion
with respect to whether Mion’s consumption was legal; nor do we
perceive that it matters under the statute, just as it wouldn’t matter
to the availability of an involuntary intoxication instruction if the
23 bar patron whose drink was unknowingly spiked was underage at
the time they consumed the spiked drink.
¶ 49 No evidence in the record indicates that, in Denver, marijuana
is “frequently” contaminated with stimulants, such as spice or PCP.
And there is no evidence that Mion knew, or even should have
known, that the marijuana in the joint might be laced with a
stimulant. See Turner, 680 P.2d at 1293 (“To deny defendant the
chance to go to the jury on the issue of whether his intoxication was
involuntary . . . is to give more weight to what might be assumed to
be common knowledge of the effects of ingesting an excessive dose
of a drug, than the specific evidence elicited on the subject.”). The
facts that the joint Mion smoked wasn’t sold to him directly by a
regulated marijuana dispensary and that Mion didn’t ask his friend
what was in the joint can be argued to the jury at his retrial, but
they don’t render his defense invalid or unavailable as a matter of
law.
¶ 50 As the People argue, Mion may have simply been under the
influence of potent marijuana that evening. We, however, must
view the evidence in the light most favorable to Mion in determining
whether he was entitled to an involuntary intoxication instruction.
24 See People v. Gallegos, 2023 COA 47, ¶ 48. We can’t conclude that
Mion’s theory of involuntary intoxication was so unreasonable as to
render it invalid as a matter of law. See O’Shaughnessy v. People,
2012 CO 9, ¶ 13 (If a court “determines as a matter of law that no
evidence exists in the record to support an affirmative defense, then
the instruction need not be presented to the jury because there is
no issue of fact for the jury to resolve.”).
E. Reversal is Required
¶ 51 The parties disagree on the appropriate standard for
determining whether the identified error warrants reversal.
¶ 52 Mion relies on Garcia for the proposition that a trial court’s
error in not allowing a defendant to raise an affirmative defense at
trial warrants automatic reversal. There, the supreme court held,
“If the trial court errs in disallowing an affirmative defense, then it
improperly lowers the prosecution’s burden of proof. Because a
defendant’s constitutional right to due process is violated by an
improper lessening of the prosecution’s burden of proof, such error
cannot be deemed harmless.” Garcia, 113 P.3d at 784 (citation
omitted).
25 ¶ 53 But the People, relying on Hagos v. People, 2012 CO 63, ¶ 11,
argue that we should review for constitutional harmless error.
Although Hagos didn’t involve an alleged failure to instruct the jury
on an affirmative defense, the supreme court has more recently
held that an error in failing to instruct the jury on an affirmative
defense “is subject to constitutional harmless error review.”
Pearson, ¶ 16; see also Griego v. People, 19 P.3d 1, 8 (Colo. 2001)
(holding that “when a trial court misinstructs the jury on an
element of an offense, either by omitting or misdescribing that
element, that error is subject to constitutional harmless” error
review).
¶ 54 We will assume, without deciding, that we should review for
constitutional harmless error. And reversal is warranted under that
standard. Under constitutional harmless error review, we must
reverse unless the error was harmless beyond a reasonable doubt.
Id. Under that test, we must reverse if “there is a reasonable
possibility that the [error] might have contributed to the conviction.”
Hagos, ¶ 11 (quoting Chapman v. California, 386 U.S. 18, 24
(1967)). The People bear the burden of showing that the error was
harmless beyond a reasonable doubt. Id.
26 ¶ 55 On appeal, the People have presented no specific argument
that any error by the trial court was harmless beyond a reasonable
doubt. Instead, they contend that the court properly declined to
give the requested instruction. And on this record, we can’t
conclude that the trial court’s error was harmless beyond a
reasonable doubt. Depending on how the jury assessed Mion’s
credibility and weighed the evidence, it could’ve reasonably
concluded that the prosecution didn’t disprove the affirmative
defense of involuntary intoxication beyond a reasonable doubt. See
§ 18-1-407(2) (“If the issue involved in an affirmative defense is
raised, then the guilt of the defendant must be established beyond a
reasonable doubt as to that issue as well as all other elements of
the offense.”). As an appellate court, we can’t weigh the evidence,
and we have no insight into the credibility of Mion’s testimony at
trial. See People v. Mejia-Mendoza, 965 P.2d 777, 780 (Colo. 1998)
(“Appellate courts are not the appropriate forum to resolve factual
discrepancies or to determine the credibility of witnesses.”).
IV. Disposition
¶ 56 The judgment is reversed, and the case is remanded for a new
trial.
27 JUDGE LIPINSKY and JUDGE GOMEZ concur.